Sent mail Gmail from Mail app not syncing with webmail
macOS Sierra (10.12.5)
macOS Sierra (10.12.5)
According to your settings, Sent messages are set to On My Mac, even though they should still copy under the IMAP file. Expand the gmail account in the sidebar and look at the sent messages there.
If you change the Sent mailbox in settings to Gmail's Sent mailbox, then they will sync under the main Sent mailbox in Mail.
Sent mail Gmail from Mail app not syncing with webmail